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<head>
    <meta charset="UTF-8">
    <style>
        body {
            padding: 100px;
        }

        article {
            border: solid 2px #ddd;
            width: 300px;
            padding: 50px 0;
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        div {
            border: solid 1px red;
            margin-left: -50px;
            margin-right: -50px;
            text-align: center;
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        h2 {
            border: solid 1px red;
            margin-bottom: 60px;
            margin-top: 30px;
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        h3 {
            border: solid 1px red;
            height: 30px;
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        ul>li {
            border: solid 1px #ff0000;
            margin: 20px 0;
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    </style>
</head>

<body>
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    <ul>
        <li>houdunren.com</li>
        <li>hdcms.com</li>
        <li>后盾人</li>
    </ul>
    <article>
        <div>houdunren.com</div>
    </article>
</body>

</html>